176 
Psyche 
[Vol. 94 
Figs. 31-36, distribution of character states. Fig. 31, PetVent states for P. sali- 
nus, P. owyheei and P. subdentatus. Fig. 32, Scape states for P. occidentals. 
Fig. 33, Scape states for P. subdentatus. Fig. 34, Scape states for P. salinus and 
P. owyheei. Fig. 35, SI values for P. occidentals. Fig. 36, SI values for P. salinus 
and P. owyheei. 
